Ive had my pc for a long time now and want to upgrade my gpu. I currently have an i5-4690k and a gtx960. I was thinking about getting a gtx 1060 or a gtx 1660. Would the 4690k bottleneck these gpus? and if so is there a cpu I could upgrade to that is the same socket/wouldnt require me to buy a whole new motherboard and memory? thanks.